#include <iostream>
#include <cstdio>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  cout << "cout\n";
  printf("printf\n");
  for (int _ = 0; _ < 3; _++) {
    int x;
    cin >> x;
    cout << "x = " << x << endl;
  }
}